CVE-2026-77711

highpriority · track · 0EPSS 0.004 · 38 %ileDEFR

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.44% (38th) EPSS

CVSS 8.2 · high

Is it mine?

10 products

Check your exposure

Who says so?

2 sources

cert_bund · certfr

EPSS · scored 2026-10-27

When Jetty's `HttpClient` make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the `Proxy-Authentication` header, which arrives to the server, that now has access to the proxy credentials.

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2

v4.08.2highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · emo@eclipse.org

v4.04.6mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200US

affected products (10)

Products and version ranges known to be affected.

Eclipse Eclipse Jetty <10.0.33< 10.0.33cert_bundDE
Eclipse Eclipse Jetty <11.0.33< 11.0.33cert_bundDE
Eclipse Eclipse Jetty <12.0.39< 12.0.39cert_bundDE
Eclipse Eclipse Jetty <12.1.13< 12.1.13cert_bundDE
Eclipse Eclipse Jetty <9.4.65< 9.4.65cert_bundDE
Eclipse Jetty< 10.0.33cert_bundDE
Eclipse Jetty< 11.0.33cert_bundDE
Eclipse Jetty< 12.0.39cert_bundDE
Eclipse Jetty< 12.1.13cert_bundDE
Eclipse Jetty< 9.4.65cert_bundDE

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3992Eclipse Jetty: Mehrere SchwachstellenDeutsch2026-10-15csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Eclipse Jetty ausnutzen, um Dateien zu manipulieren, um Informationen offenzulegen und um Sicherheitsvorkehrungen zu umgehen.
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund certfr NVD CVE.org MITRE

published 2026-10-15modified 2026-10-15

references (2) nvd

External citations — patches, advisories, analysis.

scry

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